I believe this discussion has come up prior on a different forum. I think the consensus we reached back then was something along the lines of 'heathens must be killed and believers must be tested, blow them all up regardless'.
Hm. How's this for an idea. A slowed amulet of speed will rot slower, but the slow cancels out the speed. If you haste it, it rots faster, but the speed effect is also boosted.